Hello. I'm getting an engine code P0843 from my 2009 Honda CRV. After some research it looks like it's probably a bad transmission oil pressure switch that needs to be replaced. I've cleared the code, driven around and it's come back.

My question is which one do I need to replace? Part 9 (28600-RCL-013) or 10 (28600-RCR-004)? Is there a way to tell which one just from the code or is further investigation/testing needed to determine which one?